62 lines
2.2 KiB
ArmAsm
62 lines
2.2 KiB
ArmAsm
;
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; Copyright (c) 2004, Adam Dunkels and Oliver Schmidt
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; All rights reserved.
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;
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; Redistribution and use in source and binary forms, with or without
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; modification, are permitted provided that the following conditions
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; are met:
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; 1. Redistributions of source code must retain the above copyright
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; notice, this list of conditions and the following disclaimer.
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; 2. Redistributions in binary form must reproduce the above copyright
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; notice, this list of conditions and the following disclaimer in the
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; documentation and/or other materials provided with the distribution.
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; 3. Neither the name of the Institute nor the names of its contributors
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; may be used to endorse or promote products derived from this software
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; without specific prior written permission.
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;
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; THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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; ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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; FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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; DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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; OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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; HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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; LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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; OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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; SUCH DAMAGE.
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;
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; This file is part of the Contiki operating system.
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;
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; Author: Adam Dunkels <adam@sics.se>, Oliver Schmidt <ol.sc@web.de>
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;
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;---------------------------------------------------------------------
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.importzp ptr1
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.export _lc_set
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.export _lc_resume
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;---------------------------------------------------------------------
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_lc_set:
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sta ptr1
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stx ptr1+1
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tsx
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lda $0102,x
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ldy #$01
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sta (ptr1),y
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lda $0101,x
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dey
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sta (ptr1),y
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rts
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;---------------------------------------------------------------------
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_lc_resume:
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sta ptr1
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stx ptr1+1
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ldy #$01
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lda (ptr1),y
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beq :+
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tsx
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sta $0102,x
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dey
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lda (ptr1),y
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sta $0101,x
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: rts
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;---------------------------------------------------------------------
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